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46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/*
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* Copyright (C) 2010 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "lvm-percent.h"
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float percent_to_float(percent_t v)
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{
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return (float)v / PERCENT_1;
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}
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percent_t make_percent(uint64_t numerator, uint64_t denominator)
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{
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percent_t percent;
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if (!denominator)
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return PERCENT_100; /* FIXME? */
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if (!numerator)
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return PERCENT_0;
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if (numerator == denominator)
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return PERCENT_100;
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switch (percent = PERCENT_100 * ((double) numerator / (double) denominator)) {
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case PERCENT_100:
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return PERCENT_100 - 1;
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case PERCENT_0:
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return PERCENT_0 + 1;
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default:
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return percent;
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}
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}
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uint32_t percent_of_extents(uint32_t percents, uint32_t count, int roundup)
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{
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return (uint32_t)(((uint64_t)percents * (uint64_t)count +
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((roundup) ? 99 : 0)) / 100);
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}
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